.xx "cat" "phototypesetter interface" .xx "dc" "DC-11 communications interface" .xx "dh" "DH-11 communications multiplexer" .xx "dn" "DN-11 ACU interface" .xx "dp" "DP-11 201 data-phone interface" .xx "dz" "DZ-11 communications multiplexer" .xx "hp" "RH-11/RP04, RP05, RP06, RM03 moving-head disk" .xx "hs" "RH11/RS03-RS04 fixed-head disk file" .xx "ht" "RH-11/TE-16 magtape interface" .xx "kl" "KL-11 or DL-11 asynchronous interface" .xx "lp" "line printer" .xx "mem" "main memory" .xx "null" "data sink" .xx "pc" "PC-11 paper tape reader/punch" .xx "rf" "RF11/RS11 fixed-head disk file" .xx "rk" "RK-11/RK03 or RK05 disk" .xx "rp" "RP-11/RP03 moving-head disk" .xx "tc" "TC-11/TU56 DECtape" .xx "tm" "TM-11/TU-10 magtape interface" .xx "tty" "general terminal interface" .xx "vp" "Versatec printer-plotter"